Home / 1,185,206.40-1,777,809.60-870,278.40

Finding the Fourth Proportional to 1,185,206.40, 1,777,809.60 and 870,278.40

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Solution

The fourth proportional to 1,185,206.40, 1,777,809.60 and 870,278.40 is: 1,305,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,206.40 : 1,777,809.60 = 870,278.40 : x
  2. Step 2: Convert to fraction form
    1,185,206.40/1,777,809.60 = 870,278.40/x
  3. Step 3: Cross multiply
    1,185,206.40x = 1,777,809.60 × 870,278.40
  4. Step 4: Simplify right side
    1,185,206.40x = 1,547,189,294,192.64
  5. Step 5: Solve for x
    x = 1,547,189,294,192.64/1,185,206.40
  6. Step 6: Final answer
    x = 1,305,417.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.