Home / 672,740.40-1,009,110.60-389,305.20

Finding the Fourth Proportional to 672,740.40, 1,009,110.60 and 389,305.20

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Solution

The fourth proportional to 672,740.40, 1,009,110.60 and 389,305.20 is: 583,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,740.40 : 1,009,110.60 = 389,305.20 : x
  2. Step 2: Convert to fraction form
    672,740.40/1,009,110.60 = 389,305.20/x
  3. Step 3: Cross multiply
    672,740.40x = 1,009,110.60 × 389,305.20
  4. Step 4: Simplify right side
    672,740.40x = 392,852,003,955.12
  5. Step 5: Solve for x
    x = 392,852,003,955.12/672,740.40
  6. Step 6: Final answer
    x = 583,957.80

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1.5x scale

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.