Home / 402,912,390.60-604,368,585.90-315,236,435.40

Finding the Fourth Proportional to 402,912,390.60, 604,368,585.90 and 315,236,435.40

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Solution

The fourth proportional to 402,912,390.60, 604,368,585.90 and 315,236,435.40 is: 472,854,653.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,912,390.60 : 604,368,585.90 = 315,236,435.40 : x
  2. Step 2: Convert to fraction form
    402,912,390.60/604,368,585.90 = 315,236,435.40/x
  3. Step 3: Cross multiply
    402,912,390.60x = 604,368,585.90 × 315,236,435.40
  4. Step 4: Simplify right side
    402,912,390.60x = 190,518,998,686,854,688
  5. Step 5: Solve for x
    x = 190,518,998,686,854,688/402,912,390.60
  6. Step 6: Final answer
    x = 472,854,653.10

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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.