Home / 998,871,998.80-1,497,710,801.40-515,142,590.80

Finding the Fourth Proportional to 998,871,998.80, 1,497,710,801.40 and 515,142,590.80

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Solution

The fourth proportional to 998,871,998.80, 1,497,710,801.40 and 515,142,590.80 is: 772,405,897.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,871,998.80 : 1,497,710,801.40 = 515,142,590.80 : x
  2. Step 2: Convert to fraction form
    998,871,998.80/1,497,710,801.40 = 515,142,590.80/x
  3. Step 3: Cross multiply
    998,871,998.80x = 1,497,710,801.40 × 515,142,590.80
  4. Step 4: Simplify right side
    998,871,998.80x = 771,534,622,502,340,352
  5. Step 5: Solve for x
    x = 771,534,622,502,340,352/998,871,998.80
  6. Step 6: Final answer
    x = 772,405,897.28

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Double scale
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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.