Home / 1,423,315.48-1,964,157.92-778,726.40

Finding the Fourth Proportional to 1,423,315.48, 1,964,157.92 and 778,726.40

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Solution

The fourth proportional to 1,423,315.48, 1,964,157.92 and 778,726.40 is: 1,074,632.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,315.48 : 1,964,157.92 = 778,726.40 : x
  2. Step 2: Convert to fraction form
    1,423,315.48/1,964,157.92 = 778,726.40/x
  3. Step 3: Cross multiply
    1,423,315.48x = 1,964,157.92 × 778,726.40
  4. Step 4: Simplify right side
    1,423,315.48x = 1,529,541,626,073.09
  5. Step 5: Solve for x
    x = 1,529,541,626,073.09/1,423,315.48
  6. Step 6: Final answer
    x = 1,074,632.89

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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.