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Finding the Fourth Proportional to 455,655.30, 683,482.95 and 429,411.30

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Solution

The fourth proportional to 455,655.30, 683,482.95 and 429,411.30 is: 644,116.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,655.30 : 683,482.95 = 429,411.30 : x
  2. Step 2: Convert to fraction form
    455,655.30/683,482.95 = 429,411.30/x
  3. Step 3: Cross multiply
    455,655.30x = 683,482.95 × 429,411.30
  4. Step 4: Simplify right side
    455,655.30x = 293,495,302,087.34
  5. Step 5: Solve for x
    x = 293,495,302,087.34/455,655.30
  6. Step 6: Final answer
    x = 644,116.95

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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.