Home / 390,889,445.10-586,333,670.85-99,756,573.18

Finding the Fourth Proportional to 390,889,445.10, 586,333,670.85 and 99,756,573.18

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Solution

The fourth proportional to 390,889,445.10, 586,333,670.85 and 99,756,573.18 is: 149,634,732.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,889,445.10 : 586,333,670.85 = 99,756,573.18 : x
  2. Step 2: Convert to fraction form
    390,889,445.10/586,333,670.85 = 99,756,573.18/x
  3. Step 3: Cross multiply
    390,889,445.10x = 586,333,670.85 × 99,756,573.18
  4. Step 4: Simplify right side
    390,889,445.10x = 58,490,637,744,046,064
  5. Step 5: Solve for x
    x = 58,490,637,744,046,064/390,889,445.10
  6. Step 6: Final answer
    x = 149,634,732.98

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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.