Home / 651,862.20-977,210.10-427,330.20

Finding the Fourth Proportional to 651,862.20, 977,210.10 and 427,330.20

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Solution

The fourth proportional to 651,862.20, 977,210.10 and 427,330.20 is: 640,612.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,862.20 : 977,210.10 = 427,330.20 : x
  2. Step 2: Convert to fraction form
    651,862.20/977,210.10 = 427,330.20/x
  3. Step 3: Cross multiply
    651,862.20x = 977,210.10 × 427,330.20
  4. Step 4: Simplify right side
    651,862.20x = 417,591,387,475.02
  5. Step 5: Solve for x
    x = 417,591,387,475.02/651,862.20
  6. Step 6: Final answer
    x = 640,612.98

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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.