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Finding the Fourth Proportional to 670,971,202.42, 925,931,431.42 and 369,550,726.78

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Solution

The fourth proportional to 670,971,202.42, 925,931,431.42 and 369,550,726.78 is: 509,975,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,971,202.42 : 925,931,431.42 = 369,550,726.78 : x
  2. Step 2: Convert to fraction form
    670,971,202.42/925,931,431.42 = 369,550,726.78/x
  3. Step 3: Cross multiply
    670,971,202.42x = 925,931,431.42 × 369,550,726.78
  4. Step 4: Simplify right side
    670,971,202.42x = 342,178,633,429,706,688
  5. Step 5: Solve for x
    x = 342,178,633,429,706,688/670,971,202.42
  6. Step 6: Final answer
    x = 509,975,140.80

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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.