Home / 720,545,803.28-994,345,857.05-403,005,291.19

Finding the Fourth Proportional to 720,545,803.28, 994,345,857.05 and 403,005,291.19

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Solution

The fourth proportional to 720,545,803.28, 994,345,857.05 and 403,005,291.19 is: 556,143,190.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,545,803.28 : 994,345,857.05 = 403,005,291.19 : x
  2. Step 2: Convert to fraction form
    720,545,803.28/994,345,857.05 = 403,005,291.19/x
  3. Step 3: Cross multiply
    720,545,803.28x = 994,345,857.05 × 403,005,291.19
  4. Step 4: Simplify right side
    720,545,803.28x = 400,726,641,658,411,776
  5. Step 5: Solve for x
    x = 400,726,641,658,411,776/720,545,803.28
  6. Step 6: Final answer
    x = 556,143,190.11

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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.