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Finding the Fourth Proportional to 907,450.80, 1,360,981.80 and 402,010.80

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Solution

The fourth proportional to 907,450.80, 1,360,981.80 and 402,010.80 is: 602,930.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,450.80 : 1,360,981.80 = 402,010.80 : x
  2. Step 2: Convert to fraction form
    907,450.80/1,360,981.80 = 402,010.80/x
  3. Step 3: Cross multiply
    907,450.80x = 1,360,981.80 × 402,010.80
  4. Step 4: Simplify right side
    907,450.80x = 547,129,382,203.44
  5. Step 5: Solve for x
    x = 547,129,382,203.44/907,450.80
  6. Step 6: Final answer
    x = 602,930.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.