Home / 745,616.34-1,118,428.02-319,089.78

Finding the Fourth Proportional to 745,616.34, 1,118,428.02 and 319,089.78

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Solution

The fourth proportional to 745,616.34, 1,118,428.02 and 319,089.78 is: 478,636.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,616.34 : 1,118,428.02 = 319,089.78 : x
  2. Step 2: Convert to fraction form
    745,616.34/1,118,428.02 = 319,089.78/x
  3. Step 3: Cross multiply
    745,616.34x = 1,118,428.02 × 319,089.78
  4. Step 4: Simplify right side
    745,616.34x = 356,878,950,847.64
  5. Step 5: Solve for x
    x = 356,878,950,847.64/745,616.34
  6. Step 6: Final answer
    x = 478,636.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.