Home / 1,280,389.56-1,921,100.72-569,931.68

Finding the Fourth Proportional to 1,280,389.56, 1,921,100.72 and 569,931.68

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Solution

The fourth proportional to 1,280,389.56, 1,921,100.72 and 569,931.68 is: 855,127.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,389.56 : 1,921,100.72 = 569,931.68 : x
  2. Step 2: Convert to fraction form
    1,280,389.56/1,921,100.72 = 569,931.68/x
  3. Step 3: Cross multiply
    1,280,389.56x = 1,921,100.72 × 569,931.68
  4. Step 4: Simplify right side
    1,280,389.56x = 1,094,896,148,343.65
  5. Step 5: Solve for x
    x = 1,094,896,148,343.65/1,280,389.56
  6. Step 6: Final answer
    x = 855,127.36

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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.