Home / 1,071,783.47-1,478,758.20-690,031.28

Finding the Fourth Proportional to 1,071,783.47, 1,478,758.20 and 690,031.28

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Solution

The fourth proportional to 1,071,783.47, 1,478,758.20 and 690,031.28 is: 952,048.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,071,783.47 : 1,478,758.20 = 690,031.28 : x
  2. Step 2: Convert to fraction form
    1,071,783.47/1,478,758.20 = 690,031.28/x
  3. Step 3: Cross multiply
    1,071,783.47x = 1,478,758.20 × 690,031.28
  4. Step 4: Simplify right side
    1,071,783.47x = 1,020,389,413,556.50
  5. Step 5: Solve for x
    x = 1,020,389,413,556.50/1,071,783.47
  6. Step 6: Final answer
    x = 952,048.10

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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.