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Finding the Fourth Proportional to 690,430.74, 952,726.30 and 384,535.65

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Solution

The fourth proportional to 690,430.74, 952,726.30 and 384,535.65 is: 530,621.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,430.74 : 952,726.30 = 384,535.65 : x
  2. Step 2: Convert to fraction form
    690,430.74/952,726.30 = 384,535.65/x
  3. Step 3: Cross multiply
    690,430.74x = 952,726.30 × 384,535.65
  4. Step 4: Simplify right side
    690,430.74x = 366,357,231,816.99
  5. Step 5: Solve for x
    x = 366,357,231,816.99/690,430.74
  6. Step 6: Final answer
    x = 530,621.27

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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.