Home / 509,934,667.40-764,902,001.10-326,268,657.80

Finding the Fourth Proportional to 509,934,667.40, 764,902,001.10 and 326,268,657.80

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Solution

The fourth proportional to 509,934,667.40, 764,902,001.10 and 326,268,657.80 is: 489,402,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,934,667.40 : 764,902,001.10 = 326,268,657.80 : x
  2. Step 2: Convert to fraction form
    509,934,667.40/764,902,001.10 = 326,268,657.80/x
  3. Step 3: Cross multiply
    509,934,667.40x = 764,902,001.10 × 326,268,657.80
  4. Step 4: Simplify right side
    509,934,667.40x = 249,563,549,247,431,136
  5. Step 5: Solve for x
    x = 249,563,549,247,431,136/509,934,667.40
  6. Step 6: Final answer
    x = 489,402,986.70

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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.