Home / 651,510.20-977,265.30-402,332.60

Finding the Fourth Proportional to 651,510.20, 977,265.30 and 402,332.60

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Solution

The fourth proportional to 651,510.20, 977,265.30 and 402,332.60 is: 603,498.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,510.20 : 977,265.30 = 402,332.60 : x
  2. Step 2: Convert to fraction form
    651,510.20/977,265.30 = 402,332.60/x
  3. Step 3: Cross multiply
    651,510.20x = 977,265.30 × 402,332.60
  4. Step 4: Simplify right side
    651,510.20x = 393,185,689,038.78
  5. Step 5: Solve for x
    x = 393,185,689,038.78/651,510.20
  6. Step 6: Final answer
    x = 603,498.90

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Double scale
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Similar ratio
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1.5x scale

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.