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Finding the Fourth Proportional to 553,864.78, 832,531.29 and 365,535.40

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Solution

The fourth proportional to 553,864.78, 832,531.29 and 365,535.40 is: 549,447.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,864.78 : 832,531.29 = 365,535.40 : x
  2. Step 2: Convert to fraction form
    553,864.78/832,531.29 = 365,535.40/x
  3. Step 3: Cross multiply
    553,864.78x = 832,531.29 × 365,535.40
  4. Step 4: Simplify right side
    553,864.78x = 304,319,658,102.67
  5. Step 5: Solve for x
    x = 304,319,658,102.67/553,864.78
  6. Step 6: Final answer
    x = 549,447.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.