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Finding the Fourth Proportional to 607,649.10, 910,890.45 and 472,638.30

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Solution

The fourth proportional to 607,649.10, 910,890.45 and 472,638.30 is: 708,503.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,649.10 : 910,890.45 = 472,638.30 : x
  2. Step 2: Convert to fraction form
    607,649.10/910,890.45 = 472,638.30/x
  3. Step 3: Cross multiply
    607,649.10x = 910,890.45 × 472,638.30
  4. Step 4: Simplify right side
    607,649.10x = 430,521,713,774.24
  5. Step 5: Solve for x
    x = 430,521,713,774.24/607,649.10
  6. Step 6: Final answer
    x = 708,503.83

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1.5x scale

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.