Home / 678,035.18-935,626.65-402,345.51

Finding the Fourth Proportional to 678,035.18, 935,626.65 and 402,345.51

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Solution

The fourth proportional to 678,035.18, 935,626.65 and 402,345.51 is: 555,200.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,035.18 : 935,626.65 = 402,345.51 : x
  2. Step 2: Convert to fraction form
    678,035.18/935,626.65 = 402,345.51/x
  3. Step 3: Cross multiply
    678,035.18x = 935,626.65 × 402,345.51
  4. Step 4: Simplify right side
    678,035.18x = 376,445,181,663.84
  5. Step 5: Solve for x
    x = 376,445,181,663.84/678,035.18
  6. Step 6: Final answer
    x = 555,200.08

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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.