Home / 678,012.30-935,595.12-402,322.63

Finding the Fourth Proportional to 678,012.30, 935,595.12 and 402,322.63

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Solution

The fourth proportional to 678,012.30, 935,595.12 and 402,322.63 is: 555,168.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,012.30 : 935,595.12 = 402,322.63 : x
  2. Step 2: Convert to fraction form
    678,012.30/935,595.12 = 402,322.63/x
  3. Step 3: Cross multiply
    678,012.30x = 935,595.12 × 402,322.63
  4. Step 4: Simplify right side
    678,012.30x = 376,411,089,293.57
  5. Step 5: Solve for x
    x = 376,411,089,293.57/678,012.30
  6. Step 6: Final answer
    x = 555,168.53

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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.