Home / 1,328,075,832.80-1,992,113,749.20-407,997,934.40

Finding the Fourth Proportional to 1,328,075,832.80, 1,992,113,749.20 and 407,997,934.40

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Solution

The fourth proportional to 1,328,075,832.80, 1,992,113,749.20 and 407,997,934.40 is: 611,996,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328,075,832.80 : 1,992,113,749.20 = 407,997,934.40 : x
  2. Step 2: Convert to fraction form
    1,328,075,832.80/1,992,113,749.20 = 407,997,934.40/x
  3. Step 3: Cross multiply
    1,328,075,832.80x = 1,992,113,749.20 × 407,997,934.40
  4. Step 4: Simplify right side
    1,328,075,832.80x = 812,778,294,763,439,616
  5. Step 5: Solve for x
    x = 812,778,294,763,439,616/1,328,075,832.80
  6. Step 6: Final answer
    x = 611,996,901.60

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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.