Home / 1,992,912,352.80-2,989,368,529.20-612,547,499.40

Finding the Fourth Proportional to 1,992,912,352.80, 2,989,368,529.20 and 612,547,499.40

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Solution

The fourth proportional to 1,992,912,352.80, 2,989,368,529.20 and 612,547,499.40 is: 918,821,249.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,912,352.80 : 2,989,368,529.20 = 612,547,499.40 : x
  2. Step 2: Convert to fraction form
    1,992,912,352.80/2,989,368,529.20 = 612,547,499.40/x
  3. Step 3: Cross multiply
    1,992,912,352.80x = 2,989,368,529.20 × 612,547,499.40
  4. Step 4: Simplify right side
    1,992,912,352.80x = 1,831,130,217,346,515,712
  5. Step 5: Solve for x
    x = 1,831,130,217,346,515,712/1,992,912,352.80
  6. Step 6: Final answer
    x = 918,821,249.10

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1.5x scale

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.