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Finding the Fourth Proportional to 513,088.34, 708,064.53 and 286,737.62

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Solution

The fourth proportional to 513,088.34, 708,064.53 and 286,737.62 is: 395,699.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,088.34 : 708,064.53 = 286,737.62 : x
  2. Step 2: Convert to fraction form
    513,088.34/708,064.53 = 286,737.62/x
  3. Step 3: Cross multiply
    513,088.34x = 708,064.53 × 286,737.62
  4. Step 4: Simplify right side
    513,088.34x = 203,028,738,138.62
  5. Step 5: Solve for x
    x = 203,028,738,138.62/513,088.34
  6. Step 6: Final answer
    x = 395,699.38

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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.