Home / 664,837.16-990,931.34-626,999.63

Finding the Fourth Proportional to 664,837.16, 990,931.34 and 626,999.63

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Solution

The fourth proportional to 664,837.16, 990,931.34 and 626,999.63 is: 934,534.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,837.16 : 990,931.34 = 626,999.63 : x
  2. Step 2: Convert to fraction form
    664,837.16/990,931.34 = 626,999.63/x
  3. Step 3: Cross multiply
    664,837.16x = 990,931.34 × 626,999.63
  4. Step 4: Simplify right side
    664,837.16x = 621,313,575,445.75
  5. Step 5: Solve for x
    x = 621,313,575,445.75/664,837.16
  6. Step 6: Final answer
    x = 934,534.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.