Home / 651,433.20-977,149.80-540,841.20

Finding the Fourth Proportional to 651,433.20, 977,149.80 and 540,841.20

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Solution

The fourth proportional to 651,433.20, 977,149.80 and 540,841.20 is: 811,261.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,433.20 : 977,149.80 = 540,841.20 : x
  2. Step 2: Convert to fraction form
    651,433.20/977,149.80 = 540,841.20/x
  3. Step 3: Cross multiply
    651,433.20x = 977,149.80 × 540,841.20
  4. Step 4: Simplify right side
    651,433.20x = 528,482,870,411.76
  5. Step 5: Solve for x
    x = 528,482,870,411.76/651,433.20
  6. Step 6: Final answer
    x = 811,261.80

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Half scale
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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.