Home / 677,463.10-934,831.74-391,075.45

Finding the Fourth Proportional to 677,463.10, 934,831.74 and 391,075.45

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Solution

The fourth proportional to 677,463.10, 934,831.74 and 391,075.45 is: 539,645.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,463.10 : 934,831.74 = 391,075.45 : x
  2. Step 2: Convert to fraction form
    677,463.10/934,831.74 = 391,075.45/x
  3. Step 3: Cross multiply
    677,463.10x = 934,831.74 × 391,075.45
  4. Step 4: Simplify right side
    677,463.10x = 365,589,743,394.78
  5. Step 5: Solve for x
    x = 365,589,743,394.78/677,463.10
  6. Step 6: Final answer
    x = 539,645.25

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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.