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Finding the Fourth Proportional to 636,740.18, 878,686.80 and 350,254.16

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Solution

The fourth proportional to 636,740.18, 878,686.80 and 350,254.16 is: 483,342.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    636,740.18 : 878,686.80 = 350,254.16 : x
  2. Step 2: Convert to fraction form
    636,740.18/878,686.80 = 350,254.16/x
  3. Step 3: Cross multiply
    636,740.18x = 878,686.80 × 350,254.16
  4. Step 4: Simplify right side
    636,740.18x = 307,763,707,037.09
  5. Step 5: Solve for x
    x = 307,763,707,037.09/636,740.18
  6. Step 6: Final answer
    x = 483,342.68

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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.