Home / 525,885,708.40-787,316,908.20-321,812,364.40

Finding the Fourth Proportional to 525,885,708.40, 787,316,908.20 and 321,812,364.40

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Solution

The fourth proportional to 525,885,708.40, 787,316,908.20 and 321,812,364.40 is: 481,793,499.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,885,708.40 : 787,316,908.20 = 321,812,364.40 : x
  2. Step 2: Convert to fraction form
    525,885,708.40/787,316,908.20 = 321,812,364.40/x
  3. Step 3: Cross multiply
    525,885,708.40x = 787,316,908.20 × 321,812,364.40
  4. Step 4: Simplify right side
    525,885,708.40x = 253,368,315,759,939,744
  5. Step 5: Solve for x
    x = 253,368,315,759,939,744/525,885,708.40
  6. Step 6: Final answer
    x = 481,793,499.45

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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.