Home / 645,656.31-888,977.55-548,655.57

Finding the Fourth Proportional to 645,656.31, 888,977.55 and 548,655.57

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Solution

The fourth proportional to 645,656.31, 888,977.55 and 548,655.57 is: 755,421.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,656.31 : 888,977.55 = 548,655.57 : x
  2. Step 2: Convert to fraction form
    645,656.31/888,977.55 = 548,655.57/x
  3. Step 3: Cross multiply
    645,656.31x = 888,977.55 × 548,655.57
  4. Step 4: Simplify right side
    645,656.31x = 487,742,484,412.45
  5. Step 5: Solve for x
    x = 487,742,484,412.45/645,656.31
  6. Step 6: Final answer
    x = 755,421.23

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1.5x scale

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.