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Finding the Fourth Proportional to 992,354,692.60, 1,488,532,038.90 and 664,987,036.60

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Solution

The fourth proportional to 992,354,692.60, 1,488,532,038.90 and 664,987,036.60 is: 997,480,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,354,692.60 : 1,488,532,038.90 = 664,987,036.60 : x
  2. Step 2: Convert to fraction form
    992,354,692.60/1,488,532,038.90 = 664,987,036.60/x
  3. Step 3: Cross multiply
    992,354,692.60x = 1,488,532,038.90 × 664,987,036.60
  4. Step 4: Simplify right side
    992,354,692.60x = 989,854,509,432,267,008
  5. Step 5: Solve for x
    x = 989,854,509,432,267,008/992,354,692.60
  6. Step 6: Final answer
    x = 997,480,554.90

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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.