Home / 989,434.94-1,365,420.66-559,705.91

Finding the Fourth Proportional to 989,434.94, 1,365,420.66 and 559,705.91

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Solution

The fourth proportional to 989,434.94, 1,365,420.66 and 559,705.91 is: 772,394.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,434.94 : 1,365,420.66 = 559,705.91 : x
  2. Step 2: Convert to fraction form
    989,434.94/1,365,420.66 = 559,705.91/x
  3. Step 3: Cross multiply
    989,434.94x = 1,365,420.66 × 559,705.91
  4. Step 4: Simplify right side
    989,434.94x = 764,234,013,038.10
  5. Step 5: Solve for x
    x = 764,234,013,038.10/989,434.94
  6. Step 6: Final answer
    x = 772,394.41

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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.