Home / 778,214.40-1,074,470.40-587,443.20

Finding the Fourth Proportional to 778,214.40, 1,074,470.40 and 587,443.20

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Solution

The fourth proportional to 778,214.40, 1,074,470.40 and 587,443.20 is: 811,075.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,214.40 : 1,074,470.40 = 587,443.20 : x
  2. Step 2: Convert to fraction form
    778,214.40/1,074,470.40 = 587,443.20/x
  3. Step 3: Cross multiply
    778,214.40x = 1,074,470.40 × 587,443.20
  4. Step 4: Simplify right side
    778,214.40x = 631,190,330,081.28
  5. Step 5: Solve for x
    x = 631,190,330,081.28/778,214.40
  6. Step 6: Final answer
    x = 811,075.11

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Double scale
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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.