Home / 900,645.18-1,242,686.82-537,998.05

Finding the Fourth Proportional to 900,645.18, 1,242,686.82 and 537,998.05

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Solution

The fourth proportional to 900,645.18, 1,242,686.82 and 537,998.05 is: 742,315.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,645.18 : 1,242,686.82 = 537,998.05 : x
  2. Step 2: Convert to fraction form
    900,645.18/1,242,686.82 = 537,998.05/x
  3. Step 3: Cross multiply
    900,645.18x = 1,242,686.82 × 537,998.05
  4. Step 4: Simplify right side
    900,645.18x = 668,563,085,920.70
  5. Step 5: Solve for x
    x = 668,563,085,920.70/900,645.18
  6. Step 6: Final answer
    x = 742,315.73

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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.