Home / 1,278,166,652.80-1,917,249,979.20-658,293,870.40

Finding the Fourth Proportional to 1,278,166,652.80, 1,917,249,979.20 and 658,293,870.40

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Solution

The fourth proportional to 1,278,166,652.80, 1,917,249,979.20 and 658,293,870.40 is: 987,440,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,166,652.80 : 1,917,249,979.20 = 658,293,870.40 : x
  2. Step 2: Convert to fraction form
    1,278,166,652.80/1,917,249,979.20 = 658,293,870.40/x
  3. Step 3: Cross multiply
    1,278,166,652.80x = 1,917,249,979.20 × 658,293,870.40
  4. Step 4: Simplify right side
    1,278,166,652.80x = 1,262,113,909,331,887,360
  5. Step 5: Solve for x
    x = 1,262,113,909,331,887,360/1,278,166,652.80
  6. Step 6: Final answer
    x = 987,440,805.60

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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.