Home / 715,904,460.02-987,834,324.51-402,578,164.14

Finding the Fourth Proportional to 715,904,460.02, 987,834,324.51 and 402,578,164.14

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Solution

The fourth proportional to 715,904,460.02, 987,834,324.51 and 402,578,164.14 is: 555,493,855.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,904,460.02 : 987,834,324.51 = 402,578,164.14 : x
  2. Step 2: Convert to fraction form
    715,904,460.02/987,834,324.51 = 402,578,164.14/x
  3. Step 3: Cross multiply
    715,904,460.02x = 987,834,324.51 × 402,578,164.14
  4. Step 4: Simplify right side
    715,904,460.02x = 397,680,528,835,712,768
  5. Step 5: Solve for x
    x = 397,680,528,835,712,768/715,904,460.02
  6. Step 6: Final answer
    x = 555,493,855.74

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Double scale
Find fourth proportional to 715,904,461.02, 987,834,325.89 and 402,578,165.14
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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.