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Finding the Fourth Proportional to 495,861.40, 744,569.70 and 285,909.40

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Solution

The fourth proportional to 495,861.40, 744,569.70 and 285,909.40 is: 429,312.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,861.40 : 744,569.70 = 285,909.40 : x
  2. Step 2: Convert to fraction form
    495,861.40/744,569.70 = 285,909.40/x
  3. Step 3: Cross multiply
    495,861.40x = 744,569.70 × 285,909.40
  4. Step 4: Simplify right side
    495,861.40x = 212,879,476,185.18
  5. Step 5: Solve for x
    x = 212,879,476,185.18/495,861.40
  6. Step 6: Final answer
    x = 429,312.46

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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.