Home / 645,443.32-890,777.10-369,837.67

Finding the Fourth Proportional to 645,443.32, 890,777.10 and 369,837.67

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Solution

The fourth proportional to 645,443.32, 890,777.10 and 369,837.67 is: 510,413.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,443.32 : 890,777.10 = 369,837.67 : x
  2. Step 2: Convert to fraction form
    645,443.32/890,777.10 = 369,837.67/x
  3. Step 3: Cross multiply
    645,443.32x = 890,777.10 × 369,837.67
  4. Step 4: Simplify right side
    645,443.32x = 329,442,927,153.36
  5. Step 5: Solve for x
    x = 329,442,927,153.36/645,443.32
  6. Step 6: Final answer
    x = 510,413.41

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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.