Home / 1,291,238,240,693.50-1,781,898,182,524-705,288,460,018.78

Finding the Fourth Proportional to 1,291,238,240,693.50, 1,781,898,182,524 and 705,288,460,018.78

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Solution

The fourth proportional to 1,291,238,240,693.50, 1,781,898,182,524 and 705,288,460,018.78 is: 973,292,290,652.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,238,240,693.50 : 1,781,898,182,524 = 705,288,460,018.78 : x
  2. Step 2: Convert to fraction form
    1,291,238,240,693.50/1,781,898,182,524 = 705,288,460,018.78/x
  3. Step 3: Cross multiply
    1,291,238,240,693.50x = 1,781,898,182,524 × 705,288,460,018.78
  4. Step 4: Simplify right side
    1,291,238,240,693.50x = 1,256,752,225,062,615,099,899,904
  5. Step 5: Solve for x
    x = 1,256,752,225,062,615,099,899,904/1,291,238,240,693.50
  6. Step 6: Final answer
    x = 973,292,290,652.45

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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.