Home / 878,886.40-1,318,329.60-429,822.40

Finding the Fourth Proportional to 878,886.40, 1,318,329.60 and 429,822.40

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Solution

The fourth proportional to 878,886.40, 1,318,329.60 and 429,822.40 is: 644,733.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,886.40 : 1,318,329.60 = 429,822.40 : x
  2. Step 2: Convert to fraction form
    878,886.40/1,318,329.60 = 429,822.40/x
  3. Step 3: Cross multiply
    878,886.40x = 1,318,329.60 × 429,822.40
  4. Step 4: Simplify right side
    878,886.40x = 566,647,592,663.04
  5. Step 5: Solve for x
    x = 566,647,592,663.04/878,886.40
  6. Step 6: Final answer
    x = 644,733.60

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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.