Home / 1,439,688.96-2,155,004.28-987,767.28

Finding the Fourth Proportional to 1,439,688.96, 2,155,004.28 and 987,767.28

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Solution

The fourth proportional to 1,439,688.96, 2,155,004.28 and 987,767.28 is: 1,478,543.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439,688.96 : 2,155,004.28 = 987,767.28 : x
  2. Step 2: Convert to fraction form
    1,439,688.96/2,155,004.28 = 987,767.28/x
  3. Step 3: Cross multiply
    1,439,688.96x = 2,155,004.28 × 987,767.28
  4. Step 4: Simplify right side
    1,439,688.96x = 2,128,642,716,043.96
  5. Step 5: Solve for x
    x = 2,128,642,716,043.96/1,439,688.96
  6. Step 6: Final answer
    x = 1,478,543.47

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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.