Home / 991,528,315.92-1,368,281,603.40-539,391,292.56

Finding the Fourth Proportional to 991,528,315.92, 1,368,281,603.40 and 539,391,292.56

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Solution

The fourth proportional to 991,528,315.92, 1,368,281,603.40 and 539,391,292.56 is: 744,345,038.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,528,315.92 : 1,368,281,603.40 = 539,391,292.56 : x
  2. Step 2: Convert to fraction form
    991,528,315.92/1,368,281,603.40 = 539,391,292.56/x
  3. Step 3: Cross multiply
    991,528,315.92x = 1,368,281,603.40 × 539,391,292.56
  4. Step 4: Simplify right side
    991,528,315.92x = 738,039,182,643,995,264
  5. Step 5: Solve for x
    x = 738,039,182,643,995,264/991,528,315.92
  6. Step 6: Final answer
    x = 744,345,038.66

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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.