Home / 526,543.40-789,815.10-402,127.40

Finding the Fourth Proportional to 526,543.40, 789,815.10 and 402,127.40

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Solution

The fourth proportional to 526,543.40, 789,815.10 and 402,127.40 is: 603,191.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,543.40 : 789,815.10 = 402,127.40 : x
  2. Step 2: Convert to fraction form
    526,543.40/789,815.10 = 402,127.40/x
  3. Step 3: Cross multiply
    526,543.40x = 789,815.10 × 402,127.40
  4. Step 4: Simplify right side
    526,543.40x = 317,606,292,643.74
  5. Step 5: Solve for x
    x = 317,606,292,643.74/526,543.40
  6. Step 6: Final answer
    x = 603,191.10

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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.