Home / 810,286,020.07-1,117,852,305.15-542,448,145.91

Finding the Fourth Proportional to 810,286,020.07, 1,117,852,305.15 and 542,448,145.91

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Solution

The fourth proportional to 810,286,020.07, 1,117,852,305.15 and 542,448,145.91 is: 748,349,219.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,286,020.07 : 1,117,852,305.15 = 542,448,145.91 : x
  2. Step 2: Convert to fraction form
    810,286,020.07/1,117,852,305.15 = 542,448,145.91/x
  3. Step 3: Cross multiply
    810,286,020.07x = 1,117,852,305.15 × 542,448,145.91
  4. Step 4: Simplify right side
    810,286,020.07x = 606,376,910,329,837,056
  5. Step 5: Solve for x
    x = 606,376,910,329,837,056/810,286,020.07
  6. Step 6: Final answer
    x = 748,349,219.05

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Double scale
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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.