Home / 314,929,205.40-472,393,808.10-289,986,907.80

Finding the Fourth Proportional to 314,929,205.40, 472,393,808.10 and 289,986,907.80

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Solution

The fourth proportional to 314,929,205.40, 472,393,808.10 and 289,986,907.80 is: 434,980,361.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,929,205.40 : 472,393,808.10 = 289,986,907.80 : x
  2. Step 2: Convert to fraction form
    314,929,205.40/472,393,808.10 = 289,986,907.80/x
  3. Step 3: Cross multiply
    314,929,205.40x = 472,393,808.10 × 289,986,907.80
  4. Step 4: Simplify right side
    314,929,205.40x = 136,988,019,674,785,600
  5. Step 5: Solve for x
    x = 136,988,019,674,785,600/314,929,205.40
  6. Step 6: Final answer
    x = 434,980,361.70

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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.