Home / 810,225,428.10-1,118,112,225.33-438,947,459.47

Finding the Fourth Proportional to 810,225,428.10, 1,118,112,225.33 and 438,947,459.47

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Solution

The fourth proportional to 810,225,428.10, 1,118,112,225.33 and 438,947,459.47 is: 605,748,108.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,225,428.10 : 1,118,112,225.33 = 438,947,459.47 : x
  2. Step 2: Convert to fraction form
    810,225,428.10/1,118,112,225.33 = 438,947,459.47/x
  3. Step 3: Cross multiply
    810,225,428.10x = 1,118,112,225.33 × 438,947,459.47
  4. Step 4: Simplify right side
    810,225,428.10x = 490,792,520,714,017,344
  5. Step 5: Solve for x
    x = 490,792,520,714,017,344/810,225,428.10
  6. Step 6: Final answer
    x = 605,748,108.73

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Double scale
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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.