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Finding the Fourth Proportional to 520,349.52, 718,303.72 and 316,465.89

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Solution

The fourth proportional to 520,349.52, 718,303.72 and 316,465.89 is: 436,857.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,349.52 : 718,303.72 = 316,465.89 : x
  2. Step 2: Convert to fraction form
    520,349.52/718,303.72 = 316,465.89/x
  3. Step 3: Cross multiply
    520,349.52x = 718,303.72 × 316,465.89
  4. Step 4: Simplify right side
    520,349.52x = 227,318,624,038.74
  5. Step 5: Solve for x
    x = 227,318,624,038.74/520,349.52
  6. Step 6: Final answer
    x = 436,857.57

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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.