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Finding the Fourth Proportional to 676,457.92, 931,385.28 and 574,281.28

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Solution

The fourth proportional to 676,457.92, 931,385.28 and 574,281.28 is: 790,702.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,457.92 : 931,385.28 = 574,281.28 : x
  2. Step 2: Convert to fraction form
    676,457.92/931,385.28 = 574,281.28/x
  3. Step 3: Cross multiply
    676,457.92x = 931,385.28 × 574,281.28
  4. Step 4: Simplify right side
    676,457.92x = 534,877,130,771.56
  5. Step 5: Solve for x
    x = 534,877,130,771.56/676,457.92
  6. Step 6: Final answer
    x = 790,702.74

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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.