Home / 1,390,587.77-1,919,205.54-1,004,652.20

Finding the Fourth Proportional to 1,390,587.77, 1,919,205.54 and 1,004,652.20

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Solution

The fourth proportional to 1,390,587.77, 1,919,205.54 and 1,004,652.20 is: 1,386,560.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,587.77 : 1,919,205.54 = 1,004,652.20 : x
  2. Step 2: Convert to fraction form
    1,390,587.77/1,919,205.54 = 1,004,652.20/x
  3. Step 3: Cross multiply
    1,390,587.77x = 1,919,205.54 × 1,004,652.20
  4. Step 4: Simplify right side
    1,390,587.77x = 1,928,134,058,417.16
  5. Step 5: Solve for x
    x = 1,928,134,058,417.16/1,390,587.77
  6. Step 6: Final answer
    x = 1,386,560.49

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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.