Home / 875,438.20-1,312,136.70-402,171.40

Finding the Fourth Proportional to 875,438.20, 1,312,136.70 and 402,171.40

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Solution

The fourth proportional to 875,438.20, 1,312,136.70 and 402,171.40 is: 602,788.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,438.20 : 1,312,136.70 = 402,171.40 : x
  2. Step 2: Convert to fraction form
    875,438.20/1,312,136.70 = 402,171.40/x
  3. Step 3: Cross multiply
    875,438.20x = 1,312,136.70 × 402,171.40
  4. Step 4: Simplify right side
    875,438.20x = 527,703,853,630.38
  5. Step 5: Solve for x
    x = 527,703,853,630.38/875,438.20
  6. Step 6: Final answer
    x = 602,788.24

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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.