Home / 640,938.85-884,459.59-350,492.76

Finding the Fourth Proportional to 640,938.85, 884,459.59 and 350,492.76

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Solution

The fourth proportional to 640,938.85, 884,459.59 and 350,492.76 is: 483,660.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,938.85 : 884,459.59 = 350,492.76 : x
  2. Step 2: Convert to fraction form
    640,938.85/884,459.59 = 350,492.76/x
  3. Step 3: Cross multiply
    640,938.85x = 884,459.59 × 350,492.76
  4. Step 4: Simplify right side
    640,938.85x = 309,996,681,931.34
  5. Step 5: Solve for x
    x = 309,996,681,931.34/640,938.85
  6. Step 6: Final answer
    x = 483,660.31

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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.