Home / 1,385,489.30-1,913,295.69-1,310,009.12

Finding the Fourth Proportional to 1,385,489.30, 1,913,295.69 and 1,310,009.12

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Solution

The fourth proportional to 1,385,489.30, 1,913,295.69 and 1,310,009.12 is: 1,809,061.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,489.30 : 1,913,295.69 = 1,310,009.12 : x
  2. Step 2: Convert to fraction form
    1,385,489.30/1,913,295.69 = 1,310,009.12/x
  3. Step 3: Cross multiply
    1,385,489.30x = 1,913,295.69 × 1,310,009.12
  4. Step 4: Simplify right side
    1,385,489.30x = 2,506,434,803,156.69
  5. Step 5: Solve for x
    x = 2,506,434,803,156.69/1,385,489.30
  6. Step 6: Final answer
    x = 1,809,061.10

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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.