Home / 644,276.10-889,545.84-402,667.32

Finding the Fourth Proportional to 644,276.10, 889,545.84 and 402,667.32

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Solution

The fourth proportional to 644,276.10, 889,545.84 and 402,667.32 is: 555,958.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,276.10 : 889,545.84 = 402,667.32 : x
  2. Step 2: Convert to fraction form
    644,276.10/889,545.84 = 402,667.32/x
  3. Step 3: Cross multiply
    644,276.10x = 889,545.84 × 402,667.32
  4. Step 4: Simplify right side
    644,276.10x = 358,191,039,409.95
  5. Step 5: Solve for x
    x = 358,191,039,409.95/644,276.10
  6. Step 6: Final answer
    x = 555,958.91

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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.