Home / 671,430.60-1,007,145.90-519,215.40

Finding the Fourth Proportional to 671,430.60, 1,007,145.90 and 519,215.40

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Solution

The fourth proportional to 671,430.60, 1,007,145.90 and 519,215.40 is: 778,823.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,430.60 : 1,007,145.90 = 519,215.40 : x
  2. Step 2: Convert to fraction form
    671,430.60/1,007,145.90 = 519,215.40/x
  3. Step 3: Cross multiply
    671,430.60x = 1,007,145.90 × 519,215.40
  4. Step 4: Simplify right side
    671,430.60x = 522,925,661,326.86
  5. Step 5: Solve for x
    x = 522,925,661,326.86/671,430.60
  6. Step 6: Final answer
    x = 778,823.10

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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.