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Finding the Fourth Proportional to 560,045.35, 772,908.51 and 318,403.72

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Solution

The fourth proportional to 560,045.35, 772,908.51 and 318,403.72 is: 439,423.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,045.35 : 772,908.51 = 318,403.72 : x
  2. Step 2: Convert to fraction form
    560,045.35/772,908.51 = 318,403.72/x
  3. Step 3: Cross multiply
    560,045.35x = 772,908.51 × 318,403.72
  4. Step 4: Simplify right side
    560,045.35x = 246,096,944,803.66
  5. Step 5: Solve for x
    x = 246,096,944,803.66/560,045.35
  6. Step 6: Final answer
    x = 439,423.24

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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.