Home / 723,816,005.40-1,085,724,008.10-519,742,661.40

Finding the Fourth Proportional to 723,816,005.40, 1,085,724,008.10 and 519,742,661.40

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Solution

The fourth proportional to 723,816,005.40, 1,085,724,008.10 and 519,742,661.40 is: 779,613,992.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,816,005.40 : 1,085,724,008.10 = 519,742,661.40 : x
  2. Step 2: Convert to fraction form
    723,816,005.40/1,085,724,008.10 = 519,742,661.40/x
  3. Step 3: Cross multiply
    723,816,005.40x = 1,085,724,008.10 × 519,742,661.40
  4. Step 4: Simplify right side
    723,816,005.40x = 564,297,085,515,769,088
  5. Step 5: Solve for x
    x = 564,297,085,515,769,088/723,816,005.40
  6. Step 6: Final answer
    x = 779,613,992.10

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1.5x scale

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.