Home / 769,541.40-1,154,312.10-486,106.20

Finding the Fourth Proportional to 769,541.40, 1,154,312.10 and 486,106.20

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Solution

The fourth proportional to 769,541.40, 1,154,312.10 and 486,106.20 is: 729,159.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,541.40 : 1,154,312.10 = 486,106.20 : x
  2. Step 2: Convert to fraction form
    769,541.40/1,154,312.10 = 486,106.20/x
  3. Step 3: Cross multiply
    769,541.40x = 1,154,312.10 × 486,106.20
  4. Step 4: Simplify right side
    769,541.40x = 561,118,268,545.02
  5. Step 5: Solve for x
    x = 561,118,268,545.02/769,541.40
  6. Step 6: Final answer
    x = 729,159.30

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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.