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Finding the Fourth Proportional to 616,740.68, 851,055.18 and 374,989.70

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Solution

The fourth proportional to 616,740.68, 851,055.18 and 374,989.70 is: 517,457.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,740.68 : 851,055.18 = 374,989.70 : x
  2. Step 2: Convert to fraction form
    616,740.68/851,055.18 = 374,989.70/x
  3. Step 3: Cross multiply
    616,740.68x = 851,055.18 × 374,989.70
  4. Step 4: Simplify right side
    616,740.68x = 319,136,926,631.65
  5. Step 5: Solve for x
    x = 319,136,926,631.65/616,740.68
  6. Step 6: Final answer
    x = 517,457.23

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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.