Home / 421,872,002.90-632,808,004.35-419,184,617.30

Finding the Fourth Proportional to 421,872,002.90, 632,808,004.35 and 419,184,617.30

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Solution

The fourth proportional to 421,872,002.90, 632,808,004.35 and 419,184,617.30 is: 628,776,925.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,872,002.90 : 632,808,004.35 = 419,184,617.30 : x
  2. Step 2: Convert to fraction form
    421,872,002.90/632,808,004.35 = 419,184,617.30/x
  3. Step 3: Cross multiply
    421,872,002.90x = 632,808,004.35 × 419,184,617.30
  4. Step 4: Simplify right side
    421,872,002.90x = 265,263,381,127,831,488
  5. Step 5: Solve for x
    x = 265,263,381,127,831,488/421,872,002.90
  6. Step 6: Final answer
    x = 628,776,925.95

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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.