Home / 668,938.91-923,118.93-382,440.69

Finding the Fourth Proportional to 668,938.91, 923,118.93 and 382,440.69

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Solution

The fourth proportional to 668,938.91, 923,118.93 and 382,440.69 is: 527,758.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,938.91 : 923,118.93 = 382,440.69 : x
  2. Step 2: Convert to fraction form
    668,938.91/923,118.93 = 382,440.69/x
  3. Step 3: Cross multiply
    668,938.91x = 923,118.93 × 382,440.69
  4. Step 4: Simplify right side
    668,938.91x = 353,038,240,541.26
  5. Step 5: Solve for x
    x = 353,038,240,541.26/668,938.91
  6. Step 6: Final answer
    x = 527,758.57

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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.