Home / 1,385,807.50-1,912,420.11-749,903.50

Finding the Fourth Proportional to 1,385,807.50, 1,912,420.11 and 749,903.50

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Solution

The fourth proportional to 1,385,807.50, 1,912,420.11 and 749,903.50 is: 1,034,869.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,807.50 : 1,912,420.11 = 749,903.50 : x
  2. Step 2: Convert to fraction form
    1,385,807.50/1,912,420.11 = 749,903.50/x
  3. Step 3: Cross multiply
    1,385,807.50x = 1,912,420.11 × 749,903.50
  4. Step 4: Simplify right side
    1,385,807.50x = 1,434,130,533,959.39
  5. Step 5: Solve for x
    x = 1,434,130,533,959.39/1,385,807.50
  6. Step 6: Final answer
    x = 1,034,869.95

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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.