Home / 642,623.60-963,935.40-539,980.40

Finding the Fourth Proportional to 642,623.60, 963,935.40 and 539,980.40

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Solution

The fourth proportional to 642,623.60, 963,935.40 and 539,980.40 is: 809,970.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,623.60 : 963,935.40 = 539,980.40 : x
  2. Step 2: Convert to fraction form
    642,623.60/963,935.40 = 539,980.40/x
  3. Step 3: Cross multiply
    642,623.60x = 963,935.40 × 539,980.40
  4. Step 4: Simplify right side
    642,623.60x = 520,506,222,866.16
  5. Step 5: Solve for x
    x = 520,506,222,866.16/642,623.60
  6. Step 6: Final answer
    x = 809,970.60

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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.