Home / 920,476.10-1,380,931.48-289,389.91

Finding the Fourth Proportional to 920,476.10, 1,380,931.48 and 289,389.91

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Solution

The fourth proportional to 920,476.10, 1,380,931.48 and 289,389.91 is: 434,153.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,476.10 : 1,380,931.48 = 289,389.91 : x
  2. Step 2: Convert to fraction form
    920,476.10/1,380,931.48 = 289,389.91/x
  3. Step 3: Cross multiply
    920,476.10x = 1,380,931.48 × 289,389.91
  4. Step 4: Simplify right side
    920,476.10x = 399,627,636,713.37
  5. Step 5: Solve for x
    x = 399,627,636,713.37/920,476.10
  6. Step 6: Final answer
    x = 434,153.19

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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.