Home / 786,724,421.76-1,085,651,242.40-434,292,842.88

Finding the Fourth Proportional to 786,724,421.76, 1,085,651,242.40 and 434,292,842.88

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Solution

The fourth proportional to 786,724,421.76, 1,085,651,242.40 and 434,292,842.88 is: 599,308,412.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,724,421.76 : 1,085,651,242.40 = 434,292,842.88 : x
  2. Step 2: Convert to fraction form
    786,724,421.76/1,085,651,242.40 = 434,292,842.88/x
  3. Step 3: Cross multiply
    786,724,421.76x = 1,085,651,242.40 × 434,292,842.88
  4. Step 4: Simplify right side
    786,724,421.76x = 471,490,564,438,100,032
  5. Step 5: Solve for x
    x = 471,490,564,438,100,032/786,724,421.76
  6. Step 6: Final answer
    x = 599,308,412.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.