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Finding the Fourth Proportional to 435,372,347.40, 611,243,155.20 and 435,372,347.40

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Solution

The fourth proportional to 435,372,347.40, 611,243,155.20 and 435,372,347.40 is: 611,243,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,372,347.40 : 611,243,155.20 = 435,372,347.40 : x
  2. Step 2: Convert to fraction form
    435,372,347.40/611,243,155.20 = 435,372,347.40/x
  3. Step 3: Cross multiply
    435,372,347.40x = 611,243,155.20 × 435,372,347.40
  4. Step 4: Simplify right side
    435,372,347.40x = 266,118,367,311,606,528
  5. Step 5: Solve for x
    x = 266,118,367,311,606,528/435,372,347.40
  6. Step 6: Final answer
    x = 611,243,155.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.