Home / 855,649.95-1,180,426.27-515,929.47

Finding the Fourth Proportional to 855,649.95, 1,180,426.27 and 515,929.47

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Solution

The fourth proportional to 855,649.95, 1,180,426.27 and 515,929.47 is: 711,759.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,649.95 : 1,180,426.27 = 515,929.47 : x
  2. Step 2: Convert to fraction form
    855,649.95/1,180,426.27 = 515,929.47/x
  3. Step 3: Cross multiply
    855,649.95x = 1,180,426.27 × 515,929.47
  4. Step 4: Simplify right side
    855,649.95x = 609,016,699,855.18
  5. Step 5: Solve for x
    x = 609,016,699,855.18/855,649.95
  6. Step 6: Final answer
    x = 711,759.17

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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.