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Finding the Fourth Proportional to 515,051.32, 710,456.88 and 340,621.24

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Solution

The fourth proportional to 515,051.32, 710,456.88 and 340,621.24 is: 469,849.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,051.32 : 710,456.88 = 340,621.24 : x
  2. Step 2: Convert to fraction form
    515,051.32/710,456.88 = 340,621.24/x
  3. Step 3: Cross multiply
    515,051.32x = 710,456.88 × 340,621.24
  4. Step 4: Simplify right side
    515,051.32x = 241,996,703,432.13
  5. Step 5: Solve for x
    x = 241,996,703,432.13/515,051.32
  6. Step 6: Final answer
    x = 469,849.69

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1.5x scale

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.