Home / 913,420.80-1,370,001.60-282,398.40

Finding the Fourth Proportional to 913,420.80, 1,370,001.60 and 282,398.40

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Solution

The fourth proportional to 913,420.80, 1,370,001.60 and 282,398.40 is: 423,557.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,420.80 : 1,370,001.60 = 282,398.40 : x
  2. Step 2: Convert to fraction form
    913,420.80/1,370,001.60 = 282,398.40/x
  3. Step 3: Cross multiply
    913,420.80x = 1,370,001.60 × 282,398.40
  4. Step 4: Simplify right side
    913,420.80x = 386,886,259,837.44
  5. Step 5: Solve for x
    x = 386,886,259,837.44/913,420.80
  6. Step 6: Final answer
    x = 423,557.53

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1.5x scale

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.