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Finding the Fourth Proportional to 704,388.16, 972,046.24 and 402,574.40

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Solution

The fourth proportional to 704,388.16, 972,046.24 and 402,574.40 is: 555,547.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,388.16 : 972,046.24 = 402,574.40 : x
  2. Step 2: Convert to fraction form
    704,388.16/972,046.24 = 402,574.40/x
  3. Step 3: Cross multiply
    704,388.16x = 972,046.24 × 402,574.40
  4. Step 4: Simplify right side
    704,388.16x = 391,320,931,840.26
  5. Step 5: Solve for x
    x = 391,320,931,840.26/704,388.16
  6. Step 6: Final answer
    x = 555,547.29

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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.