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Finding the Fourth Proportional to 455,364.90, 683,047.35 and 442,242.90

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Solution

The fourth proportional to 455,364.90, 683,047.35 and 442,242.90 is: 663,364.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,364.90 : 683,047.35 = 442,242.90 : x
  2. Step 2: Convert to fraction form
    455,364.90/683,047.35 = 442,242.90/x
  3. Step 3: Cross multiply
    455,364.90x = 683,047.35 × 442,242.90
  4. Step 4: Simplify right side
    455,364.90x = 302,072,840,901.32
  5. Step 5: Solve for x
    x = 302,072,840,901.32/455,364.90
  6. Step 6: Final answer
    x = 663,364.35

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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.