Home / 719,836,987.36-993,376,000.56-389,812,695.52

Finding the Fourth Proportional to 719,836,987.36, 993,376,000.56 and 389,812,695.52

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Solution

The fourth proportional to 719,836,987.36, 993,376,000.56 and 389,812,695.52 is: 537,942,038.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,836,987.36 : 993,376,000.56 = 389,812,695.52 : x
  2. Step 2: Convert to fraction form
    719,836,987.36/993,376,000.56 = 389,812,695.52/x
  3. Step 3: Cross multiply
    719,836,987.36x = 993,376,000.56 × 389,812,695.52
  4. Step 4: Simplify right side
    719,836,987.36x = 387,230,576,443,170,560
  5. Step 5: Solve for x
    x = 387,230,576,443,170,560/719,836,987.36
  6. Step 6: Final answer
    x = 537,942,038.60

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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.