Home / 778,478.34-1,074,300.30-438,946.68

Finding the Fourth Proportional to 778,478.34, 1,074,300.30 and 438,946.68

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Solution

The fourth proportional to 778,478.34, 1,074,300.30 and 438,946.68 is: 605,746.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,478.34 : 1,074,300.30 = 438,946.68 : x
  2. Step 2: Convert to fraction form
    778,478.34/1,074,300.30 = 438,946.68/x
  3. Step 3: Cross multiply
    778,478.34x = 1,074,300.30 × 438,946.68
  4. Step 4: Simplify right side
    778,478.34x = 471,560,550,008.00
  5. Step 5: Solve for x
    x = 471,560,550,008.00/778,478.34
  6. Step 6: Final answer
    x = 605,746.53

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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.