Home / 989,424.72-1,484,219.96-315,602.64

Finding the Fourth Proportional to 989,424.72, 1,484,219.96 and 315,602.64

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Solution

The fourth proportional to 989,424.72, 1,484,219.96 and 315,602.64 is: 473,430.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,424.72 : 1,484,219.96 = 315,602.64 : x
  2. Step 2: Convert to fraction form
    989,424.72/1,484,219.96 = 315,602.64/x
  3. Step 3: Cross multiply
    989,424.72x = 1,484,219.96 × 315,602.64
  4. Step 4: Simplify right side
    989,424.72x = 468,423,737,716.69
  5. Step 5: Solve for x
    x = 468,423,737,716.69/989,424.72
  6. Step 6: Final answer
    x = 473,430.40

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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.