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Finding the Fourth Proportional to 693,702.72, 957,337.65 and 403,312.86

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Solution

The fourth proportional to 693,702.72, 957,337.65 and 403,312.86 is: 556,587.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,702.72 : 957,337.65 = 403,312.86 : x
  2. Step 2: Convert to fraction form
    693,702.72/957,337.65 = 403,312.86/x
  3. Step 3: Cross multiply
    693,702.72x = 957,337.65 × 403,312.86
  4. Step 4: Simplify right side
    693,702.72x = 386,106,585,607.18
  5. Step 5: Solve for x
    x = 386,106,585,607.18/693,702.72
  6. Step 6: Final answer
    x = 556,587.97

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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.