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Finding the Fourth Proportional to 658,931.32, 909,317.10 and 357,118.84

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Solution

The fourth proportional to 658,931.32, 909,317.10 and 357,118.84 is: 492,819.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,931.32 : 909,317.10 = 357,118.84 : x
  2. Step 2: Convert to fraction form
    658,931.32/909,317.10 = 357,118.84/x
  3. Step 3: Cross multiply
    658,931.32x = 909,317.10 × 357,118.84
  4. Step 4: Simplify right side
    658,931.32x = 324,734,267,944.16
  5. Step 5: Solve for x
    x = 324,734,267,944.16/658,931.32
  6. Step 6: Final answer
    x = 492,819.60

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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.