Home / 287,604,485.40-431,406,728.10-239,774,795.40

Finding the Fourth Proportional to 287,604,485.40, 431,406,728.10 and 239,774,795.40

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Solution

The fourth proportional to 287,604,485.40, 431,406,728.10 and 239,774,795.40 is: 359,662,193.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,604,485.40 : 431,406,728.10 = 239,774,795.40 : x
  2. Step 2: Convert to fraction form
    287,604,485.40/431,406,728.10 = 239,774,795.40/x
  3. Step 3: Cross multiply
    287,604,485.40x = 431,406,728.10 × 239,774,795.40
  4. Step 4: Simplify right side
    287,604,485.40x = 103,440,459,964,360,944
  5. Step 5: Solve for x
    x = 103,440,459,964,360,944/287,604,485.40
  6. Step 6: Final answer
    x = 359,662,193.10

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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.