Home / 487,575,611,999.70-731,363,417,999.55-318,117,890,111.10

Finding the Fourth Proportional to 487,575,611,999.70, 731,363,417,999.55 and 318,117,890,111.10

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Solution

The fourth proportional to 487,575,611,999.70, 731,363,417,999.55 and 318,117,890,111.10 is: 477,176,835,166.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,575,611,999.70 : 731,363,417,999.55 = 318,117,890,111.10 : x
  2. Step 2: Convert to fraction form
    487,575,611,999.70/731,363,417,999.55 = 318,117,890,111.10/x
  3. Step 3: Cross multiply
    487,575,611,999.70x = 731,363,417,999.55 × 318,117,890,111.10
  4. Step 4: Simplify right side
    487,575,611,999.70x = 232,659,787,438,459,325,513,728
  5. Step 5: Solve for x
    x = 232,659,787,438,459,325,513,728/487,575,611,999.70
  6. Step 6: Final answer
    x = 477,176,835,166.65

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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.