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Finding the Fourth Proportional to 630,155.66, 869,580.24 and 358,185.74

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Solution

The fourth proportional to 630,155.66, 869,580.24 and 358,185.74 is: 494,276.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,155.66 : 869,580.24 = 358,185.74 : x
  2. Step 2: Convert to fraction form
    630,155.66/869,580.24 = 358,185.74/x
  3. Step 3: Cross multiply
    630,155.66x = 869,580.24 × 358,185.74
  4. Step 4: Simplify right side
    630,155.66x = 311,471,241,753.78
  5. Step 5: Solve for x
    x = 311,471,241,753.78/630,155.66
  6. Step 6: Final answer
    x = 494,276.67

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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.