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Finding the Fourth Proportional to 712,583,203.20, 983,389,027.20 and 679,931,468.16

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Solution

The fourth proportional to 712,583,203.20, 983,389,027.20 and 679,931,468.16 is: 938,328,523.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,583,203.20 : 983,389,027.20 = 679,931,468.16 : x
  2. Step 2: Convert to fraction form
    712,583,203.20/983,389,027.20 = 679,931,468.16/x
  3. Step 3: Cross multiply
    712,583,203.20x = 983,389,027.20 × 679,931,468.16
  4. Step 4: Simplify right side
    712,583,203.20x = 668,637,145,036,530,176
  5. Step 5: Solve for x
    x = 668,637,145,036,530,176/712,583,203.20
  6. Step 6: Final answer
    x = 938,328,523.65

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Double scale
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1.5x scale

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.