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Finding the Fourth Proportional to 473,437.90, 710,156.85 and 421,828.30

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Solution

The fourth proportional to 473,437.90, 710,156.85 and 421,828.30 is: 632,742.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,437.90 : 710,156.85 = 421,828.30 : x
  2. Step 2: Convert to fraction form
    473,437.90/710,156.85 = 421,828.30/x
  3. Step 3: Cross multiply
    473,437.90x = 710,156.85 × 421,828.30
  4. Step 4: Simplify right side
    473,437.90x = 299,564,256,768.86
  5. Step 5: Solve for x
    x = 299,564,256,768.86/473,437.90
  6. Step 6: Final answer
    x = 632,742.45

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Similar ratio
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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.