Home / 402,912,386.60-604,368,579.90-315,236,431.40

Finding the Fourth Proportional to 402,912,386.60, 604,368,579.90 and 315,236,431.40

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Solution

The fourth proportional to 402,912,386.60, 604,368,579.90 and 315,236,431.40 is: 472,854,647.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,912,386.60 : 604,368,579.90 = 315,236,431.40 : x
  2. Step 2: Convert to fraction form
    402,912,386.60/604,368,579.90 = 315,236,431.40/x
  3. Step 3: Cross multiply
    402,912,386.60x = 604,368,579.90 × 315,236,431.40
  4. Step 4: Simplify right side
    402,912,386.60x = 190,518,994,377,961,760
  5. Step 5: Solve for x
    x = 190,518,994,377,961,760/402,912,386.60
  6. Step 6: Final answer
    x = 472,854,647.10

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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.