Home / 1,038,296.80-1,554,820.80-681,378.40

Finding the Fourth Proportional to 1,038,296.80, 1,554,820.80 and 681,378.40

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Solution

The fourth proportional to 1,038,296.80, 1,554,820.80 and 681,378.40 is: 1,020,345.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038,296.80 : 1,554,820.80 = 681,378.40 : x
  2. Step 2: Convert to fraction form
    1,038,296.80/1,554,820.80 = 681,378.40/x
  3. Step 3: Cross multiply
    1,038,296.80x = 1,554,820.80 × 681,378.40
  4. Step 4: Simplify right side
    1,038,296.80x = 1,059,421,308,990.72
  5. Step 5: Solve for x
    x = 1,059,421,308,990.72/1,038,296.80
  6. Step 6: Final answer
    x = 1,020,345.35

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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.