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Finding the Fourth Proportional to 630,143.66, 869,563.68 and 358,173.74

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Solution

The fourth proportional to 630,143.66, 869,563.68 and 358,173.74 is: 494,260.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,143.66 : 869,563.68 = 358,173.74 : x
  2. Step 2: Convert to fraction form
    630,143.66/869,563.68 = 358,173.74/x
  3. Step 3: Cross multiply
    630,143.66x = 869,563.68 × 358,173.74
  4. Step 4: Simplify right side
    630,143.66x = 311,454,875,433.76
  5. Step 5: Solve for x
    x = 311,454,875,433.76/630,143.66
  6. Step 6: Final answer
    x = 494,260.11

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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.