Home / 936,136.72-1,291,864.76-506,415.78

Finding the Fourth Proportional to 936,136.72, 1,291,864.76 and 506,415.78

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Solution

The fourth proportional to 936,136.72, 1,291,864.76 and 506,415.78 is: 698,851.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    936,136.72 : 1,291,864.76 = 506,415.78 : x
  2. Step 2: Convert to fraction form
    936,136.72/1,291,864.76 = 506,415.78/x
  3. Step 3: Cross multiply
    936,136.72x = 1,291,864.76 × 506,415.78
  4. Step 4: Simplify right side
    936,136.72x = 654,220,700,089.91
  5. Step 5: Solve for x
    x = 654,220,700,089.91/936,136.72
  6. Step 6: Final answer
    x = 698,851.66

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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.