Home / 712,754,352.21-983,603,124.70-395,236,966.76

Finding the Fourth Proportional to 712,754,352.21, 983,603,124.70 and 395,236,966.76

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Solution

The fourth proportional to 712,754,352.21, 983,603,124.70 and 395,236,966.76 is: 545,428,188.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,754,352.21 : 983,603,124.70 = 395,236,966.76 : x
  2. Step 2: Convert to fraction form
    712,754,352.21/983,603,124.70 = 395,236,966.76/x
  3. Step 3: Cross multiply
    712,754,352.21x = 983,603,124.70 × 395,236,966.76
  4. Step 4: Simplify right side
    712,754,352.21x = 388,756,315,506,258,240
  5. Step 5: Solve for x
    x = 388,756,315,506,258,240/712,754,352.21
  6. Step 6: Final answer
    x = 545,428,188.97

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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.