Home / 810,091,417.68-1,117,931,523.48-438,813,445.68

Finding the Fourth Proportional to 810,091,417.68, 1,117,931,523.48 and 438,813,445.68

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Solution

The fourth proportional to 810,091,417.68, 1,117,931,523.48 and 438,813,445.68 is: 605,565,462.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,091,417.68 : 1,117,931,523.48 = 438,813,445.68 : x
  2. Step 2: Convert to fraction form
    810,091,417.68/1,117,931,523.48 = 438,813,445.68/x
  3. Step 3: Cross multiply
    810,091,417.68x = 1,117,931,523.48 × 438,813,445.68
  4. Step 4: Simplify right side
    810,091,417.68x = 490,563,383,852,550,656
  5. Step 5: Solve for x
    x = 490,563,383,852,550,656/810,091,417.68
  6. Step 6: Final answer
    x = 605,565,462.30

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Double scale
Find fourth proportional to 810,091,418.68, 1,117,931,524.86 and 438,813,446.68
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.