Home / 626,853.20-865,077.12-354,916.40

Finding the Fourth Proportional to 626,853.20, 865,077.12 and 354,916.40

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Solution

The fourth proportional to 626,853.20, 865,077.12 and 354,916.40 is: 489,795.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,853.20 : 865,077.12 = 354,916.40 : x
  2. Step 2: Convert to fraction form
    626,853.20/865,077.12 = 354,916.40/x
  3. Step 3: Cross multiply
    626,853.20x = 865,077.12 × 354,916.40
  4. Step 4: Simplify right side
    626,853.20x = 307,030,057,152.77
  5. Step 5: Solve for x
    x = 307,030,057,152.77/626,853.20
  6. Step 6: Final answer
    x = 489,795.79

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.