Home / 1,287,362,637.80-1,931,043,956.70-469,501,620.20

Finding the Fourth Proportional to 1,287,362,637.80, 1,931,043,956.70 and 469,501,620.20

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Solution

The fourth proportional to 1,287,362,637.80, 1,931,043,956.70 and 469,501,620.20 is: 704,252,430.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,362,637.80 : 1,931,043,956.70 = 469,501,620.20 : x
  2. Step 2: Convert to fraction form
    1,287,362,637.80/1,931,043,956.70 = 469,501,620.20/x
  3. Step 3: Cross multiply
    1,287,362,637.80x = 1,931,043,956.70 × 469,501,620.20
  4. Step 4: Simplify right side
    1,287,362,637.80x = 906,628,266,348,068,608
  5. Step 5: Solve for x
    x = 906,628,266,348,068,608/1,287,362,637.80
  6. Step 6: Final answer
    x = 704,252,430.30

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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.