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Finding the Fourth Proportional to 630,343.50, 869,838.72 and 358,373.04

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Solution

The fourth proportional to 630,343.50, 869,838.72 and 358,373.04 is: 494,534.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,343.50 : 869,838.72 = 358,373.04 : x
  2. Step 2: Convert to fraction form
    630,343.50/869,838.72 = 358,373.04/x
  3. Step 3: Cross multiply
    630,343.50x = 869,838.72 × 358,373.04
  4. Step 4: Simplify right side
    630,343.50x = 311,726,746,396.11
  5. Step 5: Solve for x
    x = 311,726,746,396.11/630,343.50
  6. Step 6: Final answer
    x = 494,534.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.