Home / 742,639.40-1,024,767.56-420,293.37

Finding the Fourth Proportional to 742,639.40, 1,024,767.56 and 420,293.37

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Solution

The fourth proportional to 742,639.40, 1,024,767.56 and 420,293.37 is: 579,962.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,639.40 : 1,024,767.56 = 420,293.37 : x
  2. Step 2: Convert to fraction form
    742,639.40/1,024,767.56 = 420,293.37/x
  3. Step 3: Cross multiply
    742,639.40x = 1,024,767.56 × 420,293.37
  4. Step 4: Simplify right side
    742,639.40x = 430,703,011,259.08
  5. Step 5: Solve for x
    x = 430,703,011,259.08/742,639.40
  6. Step 6: Final answer
    x = 579,962.51

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1.5x scale

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.