Home / 985,510.20-1,478,265.30-891,031.80

Finding the Fourth Proportional to 985,510.20, 1,478,265.30 and 891,031.80

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Solution

The fourth proportional to 985,510.20, 1,478,265.30 and 891,031.80 is: 1,336,547.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,510.20 : 1,478,265.30 = 891,031.80 : x
  2. Step 2: Convert to fraction form
    985,510.20/1,478,265.30 = 891,031.80/x
  3. Step 3: Cross multiply
    985,510.20x = 1,478,265.30 × 891,031.80
  4. Step 4: Simplify right side
    985,510.20x = 1,317,181,391,136.54
  5. Step 5: Solve for x
    x = 1,317,181,391,136.54/985,510.20
  6. Step 6: Final answer
    x = 1,336,547.70

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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.