Home / 289,980,935.40-434,971,403.10-278,833,261.80

Finding the Fourth Proportional to 289,980,935.40, 434,971,403.10 and 278,833,261.80

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Solution

The fourth proportional to 289,980,935.40, 434,971,403.10 and 278,833,261.80 is: 418,249,892.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,980,935.40 : 434,971,403.10 = 278,833,261.80 : x
  2. Step 2: Convert to fraction form
    289,980,935.40/434,971,403.10 = 278,833,261.80/x
  3. Step 3: Cross multiply
    289,980,935.40x = 434,971,403.10 × 278,833,261.80
  4. Step 4: Simplify right side
    289,980,935.40x = 121,284,495,116,095,648
  5. Step 5: Solve for x
    x = 121,284,495,116,095,648/289,980,935.40
  6. Step 6: Final answer
    x = 418,249,892.70

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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.