Home / 1,280,475,083.06-1,765,317,840.51-898,478,102.55

Finding the Fourth Proportional to 1,280,475,083.06, 1,765,317,840.51 and 898,478,102.55

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Solution

The fourth proportional to 1,280,475,083.06, 1,765,317,840.51 and 898,478,102.55 is: 1,238,680,427.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,475,083.06 : 1,765,317,840.51 = 898,478,102.55 : x
  2. Step 2: Convert to fraction form
    1,280,475,083.06/1,765,317,840.51 = 898,478,102.55/x
  3. Step 3: Cross multiply
    1,280,475,083.06x = 1,765,317,840.51 × 898,478,102.55
  4. Step 4: Simplify right side
    1,280,475,083.06x = 1,586,099,423,748,944,384
  5. Step 5: Solve for x
    x = 1,586,099,423,748,944,384/1,280,475,083.06
  6. Step 6: Final answer
    x = 1,238,680,427.86

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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.