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Finding the Fourth Proportional to 878,847.40, 1,318,271.10 and 346,385.80

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Solution

The fourth proportional to 878,847.40, 1,318,271.10 and 346,385.80 is: 519,578.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,847.40 : 1,318,271.10 = 346,385.80 : x
  2. Step 2: Convert to fraction form
    878,847.40/1,318,271.10 = 346,385.80/x
  3. Step 3: Cross multiply
    878,847.40x = 1,318,271.10 × 346,385.80
  4. Step 4: Simplify right side
    878,847.40x = 456,630,389,590.38
  5. Step 5: Solve for x
    x = 456,630,389,590.38/878,847.40
  6. Step 6: Final answer
    x = 519,578.70

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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.