Home / 742,553.28-1,024,547.90-420,263.40

Finding the Fourth Proportional to 742,553.28, 1,024,547.90 and 420,263.40

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Solution

The fourth proportional to 742,553.28, 1,024,547.90 and 420,263.40 is: 579,864.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,553.28 : 1,024,547.90 = 420,263.40 : x
  2. Step 2: Convert to fraction form
    742,553.28/1,024,547.90 = 420,263.40/x
  3. Step 3: Cross multiply
    742,553.28x = 1,024,547.90 × 420,263.40
  4. Step 4: Simplify right side
    742,553.28x = 430,579,983,916.86
  5. Step 5: Solve for x
    x = 430,579,983,916.86/742,553.28
  6. Step 6: Final answer
    x = 579,864.09

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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.