Home / 920,913.71-1,381,303.08-290,007.95

Finding the Fourth Proportional to 920,913.71, 1,381,303.08 and 290,007.95

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Solution

The fourth proportional to 920,913.71, 1,381,303.08 and 290,007.95 is: 434,990.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,913.71 : 1,381,303.08 = 290,007.95 : x
  2. Step 2: Convert to fraction form
    920,913.71/1,381,303.08 = 290,007.95/x
  3. Step 3: Cross multiply
    920,913.71x = 1,381,303.08 × 290,007.95
  4. Step 4: Simplify right side
    920,913.71x = 400,588,867,652.97
  5. Step 5: Solve for x
    x = 400,588,867,652.97/920,913.71
  6. Step 6: Final answer
    x = 434,990.67

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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.