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Finding the Fourth Proportional to 559,752.77, 772,459.02 and 318,035.66

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Solution

The fourth proportional to 559,752.77, 772,459.02 and 318,035.66 is: 438,889.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,752.77 : 772,459.02 = 318,035.66 : x
  2. Step 2: Convert to fraction form
    559,752.77/772,459.02 = 318,035.66/x
  3. Step 3: Cross multiply
    559,752.77x = 772,459.02 × 318,035.66
  4. Step 4: Simplify right side
    559,752.77x = 245,669,510,386.36
  5. Step 5: Solve for x
    x = 245,669,510,386.36/559,752.77
  6. Step 6: Final answer
    x = 438,889.32

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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.