Home / 918,125.10-1,377,187.65-782,312.40

Finding the Fourth Proportional to 918,125.10, 1,377,187.65 and 782,312.40

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Solution

The fourth proportional to 918,125.10, 1,377,187.65 and 782,312.40 is: 1,173,468.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,125.10 : 1,377,187.65 = 782,312.40 : x
  2. Step 2: Convert to fraction form
    918,125.10/1,377,187.65 = 782,312.40/x
  3. Step 3: Cross multiply
    918,125.10x = 1,377,187.65 × 782,312.40
  4. Step 4: Simplify right side
    918,125.10x = 1,077,390,975,721.86
  5. Step 5: Solve for x
    x = 1,077,390,975,721.86/918,125.10
  6. Step 6: Final answer
    x = 1,173,468.60

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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.