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Finding the Fourth Proportional to 630,159.66, 869,585.76 and 358,189.74

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Solution

The fourth proportional to 630,159.66, 869,585.76 and 358,189.74 is: 494,282.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,159.66 : 869,585.76 = 358,189.74 : x
  2. Step 2: Convert to fraction form
    630,159.66/869,585.76 = 358,189.74/x
  3. Step 3: Cross multiply
    630,159.66x = 869,585.76 × 358,189.74
  4. Step 4: Simplify right side
    630,159.66x = 311,476,697,282.10
  5. Step 5: Solve for x
    x = 311,476,697,282.10/630,159.66
  6. Step 6: Final answer
    x = 494,282.19

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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.