Home / 1,013,210.40-1,399,420.08-809,965.20

Finding the Fourth Proportional to 1,013,210.40, 1,399,420.08 and 809,965.20

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Solution

The fourth proportional to 1,013,210.40, 1,399,420.08 and 809,965.20 is: 1,118,703.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013,210.40 : 1,399,420.08 = 809,965.20 : x
  2. Step 2: Convert to fraction form
    1,013,210.40/1,399,420.08 = 809,965.20/x
  3. Step 3: Cross multiply
    1,013,210.40x = 1,399,420.08 × 809,965.20
  4. Step 4: Simplify right side
    1,013,210.40x = 1,133,481,564,981.22
  5. Step 5: Solve for x
    x = 1,133,481,564,981.22/1,013,210.40
  6. Step 6: Final answer
    x = 1,118,703.05

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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.