Home / 1,007,850-1,390,343.04-644,982.96

Finding the Fourth Proportional to 1,007,850, 1,390,343.04 and 644,982.96

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Solution

The fourth proportional to 1,007,850, 1,390,343.04 and 644,982.96 is: 889,762.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,850 : 1,390,343.04 = 644,982.96 : x
  2. Step 2: Convert to fraction form
    1,007,850/1,390,343.04 = 644,982.96/x
  3. Step 3: Cross multiply
    1,007,850x = 1,390,343.04 × 644,982.96
  4. Step 4: Simplify right side
    1,007,850x = 896,747,569,354.60
  5. Step 5: Solve for x
    x = 896,747,569,354.60/1,007,850
  6. Step 6: Final answer
    x = 889,762.93

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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.