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Finding the Fourth Proportional to 630,287.97, 869,762.40 and 358,318.12

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Solution

The fourth proportional to 630,287.97, 869,762.40 and 358,318.12 is: 494,459.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,287.97 : 869,762.40 = 358,318.12 : x
  2. Step 2: Convert to fraction form
    630,287.97/869,762.40 = 358,318.12/x
  3. Step 3: Cross multiply
    630,287.97x = 869,762.40 × 358,318.12
  4. Step 4: Simplify right side
    630,287.97x = 311,651,628,014.69
  5. Step 5: Solve for x
    x = 311,651,628,014.69/630,287.97
  6. Step 6: Final answer
    x = 494,459.11

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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.